20872071

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4903}}^1$

素因数の和:4963

約数の個数: 24

約数和(自身を含む): 33661056

約数和(自身を除く): 12788985

約数列:

[1, 3, 9, 11, 33, 43, 99, 129, 387, 473, 1419, 4257, 4903, 14709, 44127, 53933, 161799, 210829, 485397, 632487, 1897461, 2319119, 6957357, 20872071]

約数ペア:

[(1, 20872071), (3, 6957357), (9, 2319119), (11, 1897461), (33, 632487), (43, 485397), (99, 210829), (129, 161799), (387, 53933), (473, 44127), (1419, 14709), (4257, 4903)]